import Vue from 'vue'
import Router from 'vue-router'
// 引入多个模块的规则
import approvalsRouter from './modules/approvals'
import departmentsRouter from './modules/departments'
import employeesRouter from './modules/employees'
import permissionRouter from './modules/permission'
import attendancesRouter from './modules/attendances'
import salarysRouter from './modules/salarys'
import settingRouter from './modules/setting'
import socialRouter from './modules/social'

Vue.use(Router)

// Layout 为Layout目录下的index.vue
import Layout from '@/layout'
/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
// 静态路由: 因为员工权限问题, 所以动态路由和静态路由要分开
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    // hidden: true 隐藏不在左侧显示
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    // hidden: true隐藏不在左侧显示
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      // 路由元信息, 其实就是存储数据的对象, 我们可以在这里放置一些信息
      meta: {
        // meta里面的属性随意定义, 左侧导航会读取我们的路由里的meta里面的title作为显示菜单名称
        title: '首页', // title这个属性名可以随便起, 当前路由页面中可以使用里面的值
        icon: 'dashboard'
      }
    }]
  },

  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/404', hidden: true }
]
// 动态路由: 因为员工权限问题, 所以动态路由和静态路由要分开
export const asyncRoutes = [
  approvalsRouter,
  departmentsRouter,
  employeesRouter,
  permissionRouter,
  attendancesRouter,
  salarysRouter,
  settingRouter,
  socialRouter
]
// 返回的是new Router出来的对象
const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: [...constantRoutes, ...asyncRoutes] // 静态路由和动态路由的临时合并
})
// 实例化了一个路由
const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
